#!/bin/bash
# Copyright 2019 The Vitess Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

GOLANGCI_LINT=$(command -v golangci-lint >/dev/null 2>&1)
if [ $? -eq 1 ]; then
  echo "Downloading golangci-lint..."
  go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.56.2
fi

gofiles=$(git diff --cached --name-only --diff-filter=ACM | grep '^go/.*\.go$')
if [ -z "$gofiles" ]; then
  exit 0
fi

gopackages=$(echo "$gofiles" | xargs -n1 dirname | sort -u | paste -sd ' ' -)

echo "Linting $gopackages"
golangci-lint run $gopackages
